What is 8/11 + 7/10?

Let's add

8

11

&plus;

7

10

Step 1

We can't add two fractions with different denominators (the bottom number). So you need to get a common denominator - both bottom numbers need to match. To do this, you'll multiply the denominators times each other... but the numerators have to change, too. They get multiplied by the other term's denominator.

So we multiply 8 by 10, and get 80, then we multiply 11 by 10 and get 110.

Do the same for the second term. We multiply 7 by 11, and get 77, then multiply 11 by 10 and get 110.

So now our fractions look like this:

80

110

&plus;

77

110

Step 2

Since our denominators match, we can add the numerators.

80 &plus; 77 = 157

Now we have an answer.

157

110

Step 3

Last of all, we need to simplify the fraction, if possible. Can it be reduced to a simpler fraction?